package cn.hnevc.wangyu;

public class ExampleTest13 {
	public static void main(String[] args) {
		String string ="itcase";
		System.out.println(string.replace("it", "cn.it"));
		String string1="   i  t  c  a  s  t     ";
		System.out.println(string1.trim());
		System.out.println(string.replace(" ", ""));
		
	}
}